Geochemistry of late Archaean metagreywackes from the Western Dharwar Craton, South India: Implications for provenance and nature of the Late Archaean crust

2009 ◽  
Vol 15 (2) ◽  
pp. 178-187 ◽  
Author(s):  
V.S. Hegde ◽  
V.C. Chavadi
Keyword(s):  
South India ◽  
Dharwar Craton ◽  
Late Archaean

Late Archaean granites: a typology based on the Dharwar Craton (India)

2003 ◽  
Vol 127 (1-3) ◽  
pp. 103-123 ◽  
Author(s):  
J.-F. Moyen ◽  
H. Martin ◽  
M. Jayananda ◽  
B. Auvray
Keyword(s):  
Dharwar Craton ◽  
Late Archaean

Archaean stromatolites from the Chitradurga schist belt, Dharwar Craton, South India

1989 ◽  
Vol 43 (3) ◽  
pp. 239-250 ◽  
Author(s):  
R. Srinivasan ◽  
Manoj Shukla ◽  
S.M. Naqvi ◽  
V.K. Yadav ◽  
B.S. Venkatachala ◽  
...  
Keyword(s):  
South India ◽  
Dharwar Craton ◽  
Schist Belt

The Chitradurga greenstone succession in south India and evolution of the late Archaean basin

1988 ◽  
Vol 125 (5) ◽  
pp. 507-519 ◽  
Author(s):  
P. K. Bhattacharyya ◽  
H. N. Bhattacharya ◽  
A. D. Mukherjee
Keyword(s):  
South India ◽  
Subsequent Development ◽  
Low Grade ◽  
Late Archaean ◽  
Clastic Sediments ◽  
Granitic Intrusion ◽  
Near Shore ◽  
Extensional Faulting ◽  
Wilson Cycle ◽  
Similar Deformation

AbstractThe Chitradurga greenstone succession of south India comprises a thick pile (~ 10 km) of late Archaean volcanic flows and terrigenous clastic sediments, metamorphosed from greenschist to low-grade amphilobite facies. An older near-shore sedimentary sequence of cratonic affiliation and an off-shore bimodal volcanic sequence were deposited contemporaneously on a gneissic basement. The volcanics are metasomatically altered, and major, minor and trace element data fail to discriminate the metavolcanics in terms of modern plate settings. A younger turbidite sequence of coarser elastics covered the older deposits without any apparent tectonic or erosional break. All the rocks of the succession display evidence of similar deformation, prior to invasion by younger granites (~ 2.5 Ga)in a late syn-kinematic phase.This suggests that initially a simple flat-lying downwarp in a continental crust served as the passive receptacle of the platform-type sediments, and also witnessed volcanism along extensional faulting. This phase of the basin was not associated with any compressive deformation. Subsidence of the Chitradurga basin by the denser volcanics and uplift in the gneissic borderlands provided the infrastructure for subsequent development of the younger turbidite sequence covering the still virtually undeformed older deposits. A compressive orogeny, accompanied by granitic intrusion (~ 2.5Ga) in a late kinematic phase, ultimately deformed and uplifted the basin-fill during the declining phase of basinal activity.There is no evidence in the belt to suggest that the plate-tectonic (Wilson cycle) processes, pending a terminal orogeny, were operative during evaluation of the Chitradurga basin.

scholarly journals Magnetotelluric investigation of lithospheric electrical structure beneath the Dharwar Craton in south India: Evidence for mantle suture and plume-continental interaction

2019 ◽  
Vol 10 (5) ◽  
pp. 1915-1930 ◽  
Author(s):  
D. Malleswari ◽  
K. Veeraswamy ◽  
K.K. Abdul Azeez ◽  
A.K. Gupta ◽  
Narendra Babu ◽  
...  
Keyword(s):  
South India ◽  
Dharwar Craton ◽  
Electrical Structure

Deformation-driven emplacement-differentiation in the Closepet pluton, Dharwar Craton, South India: an alternate view

2019 ◽  
Vol 489 (1) ◽  
pp. 261-274 ◽  
Author(s):  
Abhijit Bhattacharya
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
South India ◽  
Major Element ◽  
Volume Fraction ◽  
Dharwar Craton ◽  
The North ◽  
Magmatic Fabric ◽  
Melt Composition ◽  
Crystal Content

AbstractIn the Late Archean north-trending Closepet pluton, trains of euhedral K-feldspar phenocrysts and matrix-supported idiomorphic K-feldspar crystals in the central part of the pluton define oblique-to-pluton margin steep-dipping east/ENE-trending magmatic fabrics. The magmatic fabric is defined by phenocryst-rich and phenocryst-poor layers, with the euhedral porphyries continuous across the layers. The fabrics are near-orthogonal to the gently-dipping gneissic layers in the host gneisses. The fabrics curve adjacent to locally-developed north/NNE-trending melt-hosted dislocations parallel to the axial planes of horizontal/gently-plunging north-trending upright folds in the host gneisses. In the pluton interior, both fabrics in the intrusives formed at supra-solidus conditions, although the volume fraction of melts diminished drastically due to cooling/melt expulsion. At the pluton margin, the north-trending fabric is penetrative and post-dates magma solidification. Within the pluton, the major element oxides, rare earth elements, anorthite contents in plagioclase, and (Mg/Fe + Mg) ratios in biotite decrease with increasing SiO2 from phenocryst-rich (up to 75% by volume) granodiorite to phenocryst-poor (<15 vol%) granite that broadly correspond to minimum melt composition. The chemical-mineralogical variations in the pluton is attributed to deformation-driven ascent of magma with heterogeneous crystal content, ascending at variable velocities (highest in crystal-poor magma) along oblique-to-pluton margin east/ENE-trending extensional fractures induced by dextral shearing.

scholarly journals SHRIMP U–Pb zircon ages of granitoids adjacent to Chitradurga shear zone, Dharwar craton, South India and its tectonic implications

2015 ◽  
Vol 110 (5) ◽  
pp. 224-234 ◽  
Author(s):  
Abdulla NASHEETH ◽  
Takamoto OKUDAIRA ◽  
Kenji HORIE ◽  
Tomokazu HOKADA ◽  
Madhusoodhan SATISH–KUMAR
Keyword(s):  
Shear Zone ◽  
South India ◽  
Dharwar Craton ◽  
Tectonic Implications

Geochemistry of the archaean greywackes from the Northwestern part of Chitradurga schist belt, dharwar craton, South India — Evidence for granitoid upper crut in the Archaean

1988 ◽  
Vol 70 (1-2) ◽  
pp. 146
Author(s):  
B. Uday Raj ◽  
R. Srinivasan ◽  
D.V. Subba Rao ◽  
S.M. Naqvi ◽  
V. Balaram ◽  
...  
Keyword(s):  
South India ◽  
Dharwar Craton ◽  
Northwestern Part ◽  
Schist Belt

The Role of a Transcrustal Shear Zone in Orogenic Gold Mineralization at the Ajjanahalli Mine, Dharwar Craton, South India

2004 ◽  
Vol 99 (4) ◽  
pp. 743-759 ◽  
Author(s):  
J. Kolb ◽  
A. Hellmann ◽  
A. Rogers ◽  
S. Sindern ◽  
T. Vennemann ◽  
...  
Keyword(s):  
Shear Zone ◽  
South India ◽  
Gold Mineralization ◽  
Dharwar Craton ◽  
Orogenic Gold ◽  
Orogenic Gold Mineralization
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